StdoutRead a Powershell window.

I have a script that executes powershell commands to interact with Office 365(Microsoft hosted Exchange service).

I want to hide the powershell window and interpret the output silently, so that non-savvy users can reset passwords and such without having to learn powershell or understand its errors.

However, when I use:

Func RunCommand($commandtorun)
    $output = ""
    If WinExists("Administrator:") Then WinActivate("Administrator:")
    Send($commandtorun & "{ENTER}")
    While 1
        $output &= StdoutRead($pwshell)
        If @error Then ExitLoop
    WEnd
    MsgBox(0, "stdoutread", $output)
EndFunc   ;==>RunCommand

It doesn't exit the loop until I close the powershell window.(by design I believe)

Is there another way to return just a particular command's output?

Also, if I use $Stdin_child, the powershell window doesn't display its prompt for a command until I close my script.

Is that by design also?